Arsenal will now wear their full home kit against Man City this weekend (Image: REUTERS)

Arsenal wore all red for the first time in 40 years at West Brom on New Year's Eve (Image: PA)

The last time Arsenal wore all red was at West Brom on New Year's Eve, when Alexis Sanchez looked to have scored the winner from a deflected free-kick only for Calum Chambers to concede a controversial penalty.

Jay Rodriguez converted from the spot to seal a point for the Baggies.

That was the first time in almost 40 years since Arsenal's kit, aside from white sleeves, was totally red.

Alexis Sanchez celebrates scoring on December 31 before his move to Man United (Image: PA)

Red shorts were a regular sight for the club in the 1970s when the standard white was thought to clash with others teams’ shorts.

The alteration only happened once at Gunners’ old Highbury ground though, a Boxing Day fixture in 1970 against Southampton when white shorts didn’t stand out against the snowy pitch.

The club changed for the Hawthorns was due to a possible clash with the Baggies white shorts but that has been dismissed for this weekend's trophy decider.